Kenmore 153.316454 Troubleshooting Guide, Start Conditions, Thermal Expansion, Strange Sounds

Troubleshooting							Guide
Start		Up	Conditions
THERMAL		EXPANSION					NOT	COLD WATER HEATER	(3)
Water supply systems may, because of such events as high line								COLD WATER	PRESSURE
								INLET FITTING	REDUCING
pressure, frequent			cut-offs, the	effects	of water	hammer	among
									VALVEWITH
others, have		installed devices		such as	pressure	reducing	valves,		BY-PASS
check valves, back flowpreventers, erc...to control these types of
problems. When these devices are not equipped with an internal
by-pass, and no other measures are taken, the devices cause the
water system to be closed. As water is heated, it expands (ther-
mal	expansion) and closed systems do not allow for the expan-
sion	of heated water.

The water within the water heater tank expands as it is heated and

increases the pressure of the water system. If the relieving point of the water heater s temperature-pressure relief valve is reached, the

valve will relieve the excesspressure. The temperature-pressure

relief valve is not intendedfor the constant relief of thermal

expansion. This is an unacceptable condition and must be cor- rected.

It is recommended that any devices installed which could create a closed system have a by-pass and/or the system have an expan-

sion tank to relieve the pressure built by thermal expansion.

Thermal expansion tanks are available from Sears stores and

through the Sears Service Centers. Contact the local plumbing inspector, water supplier and/or the Sears Service Center for

assistance in controlling these situations.

Thermal Expansion Tank Specifications

Model Tank Capacity Dimensions in Inches Pipe Fitting

Number In Gallons Diameter Length On Tank

153.331020	2	8inches	12_inches	_"	Male
153.331050	5	11 inches	14_ inches	_"	Male

Expansion Tank		Sizing	Chart
	Inlet*	Water		Heater	Capacity	(Gallons)
	Water
Expansion	Pressure	30	_	40	50 b	66	82
		2		2	2	5	5
Tank	40psi
Capacity	50psi	2		2	2	5	5
Needed	60psi	2		2	5	5	5
	70psi	2		2	5	5	5
	80psi	2		5	5	5	5

*Highest recorded inlet water pressure in a 24 hour period or regulated water pressure.

NOTE= Expansion tanks are pre-charged with a 40 psi air charge. If the inlet water pressure is higher than 40 psi, the expansion tank's air pressure must be adjusted to match that pressure, bur must not be higher than 80 psi.

(2)

PRESSURE GAUGE

WATER

SHUTOFF

RECOMMENDED INSTALLATION

(VERTICAL MOUNTING)

WATER HEATER	FLOOR, CEILING
COLD WATER	JOIST, ETC.
INLET FITTING
HOT	STRAPPING

(3)

	PRESSURE
	REDUCING INLET COLD
	VALVEWITH	WATER
(i)	BY-PASS	SHUTOFF

EXPANSION

PRESSUREGAUGE

ALTERNATE RECOMMENDED

INSTALLATION

(HORIZONTAL MOUNTING)

STRANGE SOUNDS

Possible noises due to expansion and contraction of some metal _arts during periods of heat-up and cool-down do not represent

armful or dangerous conditions.

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